S: (v) increase (become bigger or greater in amount) "The amount of work increased"
S: (v) accrue (grow by addition) "The interest accrues"
S: (v) spike (manifest a sharp increase) "the voltage spiked"
S: (v) add to (have an increased effect) "This adds to my worries"
S: (v) gain, gather (increase or develop) "the peace movement gained momentum"; "the car gathers speed"
S: (v) explode, irrupt (increase rapidly and in an uncontrolled manner) "The population of India is exploding"; "The island's rodent population irrupted"
S: (v) pyramid (increase rapidly and progressively step by step on a broad base)
S: (v) snowball (increase or accumulate at a rapidly accelerating rate)
S: (v) add (make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of) "We added two students to that dorm room"; "She added a personal note to her letter"; "Add insult to injury"; "Add some extra plates to the dinner table"
S: (v) intensify, deepen (become more intense) "The debate intensified"; "His dislike for raw fish only deepened in Japan"
S: (v) intensify, compound, heighten, deepen (make more intense, stronger, or more marked) "The efforts were intensified"; "Her rudeness intensified his dislike for her"; "Pot smokers claim it heightens their awareness"; "This event only deepened my convictions"
S: (v) grow (become larger, greater, or bigger; expand or gain) "The problem grew too large for me"; "Her business grew fast"
S: (v) widen, broaden, extend (extend in scope or range or area) "The law was extended to all citizens"; "widen the range of applications"; "broaden your horizon"; "Extend your backyard"